Calcium deficiency and calcium supplementation have always been topics that accompany the growth of babies. Is it a calcium deficiency if babies scratch their scalp more often? Can a baby who is breastfed or eating formula be calcium deficient? Calcium does affect the growth and development of the baby, what are the manifestations of whether the baby needs calcium supplementation? Some mothers say that their babies are always scratching their hair, pulling their ears, and sometimes banging their heads on their cribs. In fact, if the baby is not playing with itself, it is because the development of the inner ear is not balanced enough and the baby always feels uncomfortable with the ear. These situations are not really calcium deficient, but the mother often takes the baby on swings and massages the root of the ear, which will ease a lot, and the baby will be fine when he/she is older. How to identify the “real” baby calcium deficiency? The signs of calcium deficiency in babies is actually a false proposition, because there is no specific clinical manifestation of calcium deficiency. What can give us reference is the complications caused by calcium deficiency. 1, the baby is easily irritable and restless, often crying for unknown reasons, and calcium deficiency will not be easy to fall asleep, even if they fall asleep, they are easy to wake up. 2, the baby sweats more, even if the weather is not very hot, but also easy to sweat. 3, the baby’s hair is yellow and thinning, the occipital hair loss circle, the back of the head often appear hair loss. 4, the mother found that the baby also does not have other diseases, but is later than the same age children teething, or uneven teeth, upper and lower teeth do not seam, bite incorrectly, loose teeth, easy to collapse, premature loss; 5, the baby looks dull, less expression, movement and language than the same stage of the child backward; 6, the baby forehead high protrusion, the formation of a square skull, or often have a string of beads ribs, each rib cartilage hyperplasia linked like 7, baby anorexia, paranoia is mostly due to the body’s calcium intake is not enough, easily lead to loss of appetite, and then lead to the baby’s intelligence can not keep up, immune function decline; 8, baby easy to grow eczema is also related to calcium deficiency, common in the top of the head, face, behind the ears, accompanied by crying and restlessness, the back of the pillow and more sweating. The first thing you need to do is to take care of your baby’s growth and development, but calcium is not a good idea. Because both breast milk and formula have the necessary calcium for baby’s growth, it is already very sufficient. Excessive calcium supplementation can affect the absorption and utilization of other trace elements such as iron, zinc, magnesium and phosphorus in the body, and in serious cases can cause urinary tract stones, hypercalcemia, alkalosis and other disorders. Third, when is the most appropriate time for babies to take calcium supplements? Generally speaking, before the age of 2, babies can be given proper calcium supplements, and after the age of 2, babies can meet their calcium needs for growth and development through a reasonable diet. Parents should pay attention to the fact that calcium is not absorbed as much as it is given to the baby. The amount of calcium absorbed in the stomach and intestines depends mainly on the baby’s calcium nutritional status at the time, and is also regulated by the baby’s body activation of vitamin D, parathyroid and other substances. Therefore, when babies take calcium supplements, they should also pay attention to the intake of vitamin D. And it is best to go outdoors every day. Sunlight and outdoor exercise are the most natural promoters of calcium absorption.